package com.example.makerspace.filter;

import org.springframework.stereotype.Component;

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class CrosFilter implements Filter {

    //重写其中的doFilter方法
    @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
        HttpServletResponse response = (HttpServletResponse) res;
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        // 干脆设为*，不设置的话用默认的也会导致跨域
        response.setHeader("Access-Control-Allow-Headers","*");
        //继续执行下一个过滤器
        chain.doFilter(req, response);
    }
}